I would say the author uses irony in this passage that remembering his mother makes him not happy but miserable which may be the opposite of what is expected but he would rather suffer this than be happy in forgetting her as this latter feeling would be expected to make him sad.
Answer:
You can develop vocabulary by reading and communicating with others who speak the language that you are building your vocabulary in. You can also write down words and their definition that you do not understand so you can remember better next time. Finally, use words that you just learned so that you will be able to remember them better. This will help you build your vocab.
Hope that helped! Have a good day!
I'd say D, because that seems like a good writers strategy. To give information centered around the narrative and theme. Otherwise, A.
